Timer



Nov. 3, 1942. ux 2,300,950

' TIMER Filed Feb. 25, 1941 4 Sheets-Sheet 1 K\\\\\ \NI NOV. 3, 1942. UX

TIMER Filed Feb. 25, 1941 4 Sheets-Sheet 2 Nov .3, 1942. F. LUX2,300,950

TIMER Filed Febl 25, 1941 4 Sheets-Sheet 3 F. LUX

' TIMER- Nov. 3, 1942.

Filed Feb. 25, 1941 4 Sheets-Sheet 4 'tion, as illustrated the clock isdesigned to be ion to first move the mechanism to "on position .facture.

Patented Nov. 3, 1942 i umrap STATES PATEN orrlc k milufllfllll Company,

Waterbury, Conn, a corporation of Connecti Application February 25,1941, Serial No. 380,465

j 18 Claims.

This invention relates to timers, and more particularly to a timer whichmay be employed to control the operation of a switch or some othermember which it is desired to move at predetermined intervals, or in astep-by-step movement. As shown, the timer is employed to control themovements of an electric switch to both open and close said-switch,although it will be understood that the particular construction is notlimited to this function, but may be employed in various other relationswhere it is desired to effect the movement of a control member.

The timer illustrated in the present'application is clock-operated, thatis, it is combined with a clock mechanism which is designed to indicatethe hour as well as to indicate the period during which the switch willoccupy an on" position.

, While the particular power employed to operate the clock is not ofimportance in the applicaoperated'electrically. It will be understood,how ever, that certain of the novel features of the invention may beemployed in a timer per se as well as with a combined timer and clock.

In the past devices of this character have been relatively complicatedand expensive,and in particular it has been necessary when constructingan on and off timer to employ two' sets of mechanisms which weresubstantial duplicates of each other, one to operate the movable memberto on" position and the other set acting to move the member to oilposition. In the present arrangement such duplication of elements isavoided, and one movable controlling member is pro-' vided which iscontrolledin a step-by-step fashand thereafter to of! position.

One object of the present invention is to provides timer mechanism ofrelatively simple construction.

A further object of the invention is to provide a timer mechanism inwhich, the position of a single movable member is controlled by thetimer in a step-by-step fashion, the first movement of the memberactuating a switch or the like to an on position, and the secondmovement thereof serving to movethe switch to "oil" position.

A still further object of theinvention is the provision of a combinedclock and timer, the iatvtei' being operated by the. clock mechanism,whichwill be of simple construction and which therefore may berelatively economical to manu;

A still further object of theinvention is to provide improved andsimplified mechanism to actuate the switch or other controlled member,and which will in turn be actuated bythe clock mechanism, and to provideimproved indicating means which may cooperate with the clock face toindicate atonce the period of time during which the switch or othermember will be permitted to remain in on position.

To these and other ends the invention consists in the novel features andcombinations of parts to be hereinafter described and claimed.

In the accompanying drawings:

Fig. 1 is a front elevational view of a combined clock and timerembodying my invention; Fig. 2 is a horizontal sectional view on line2-2 of Fig. l;

' Fig. 3 is a detail view of the switch mechanism; Fig. 4 is a partialvertical sectional view on line 4-4 of Fig. 1;

Fig. 5 is a sectional view on line 5-.--5 of Fig. 4

Fig. 6 isasectional view on line 8-6 of Fig. 5;

Fig. 7 is a sectional view on line 1-1 of Fig. 6;

Fig. 8 is a detail view of the movable controlling member;

Fig. .9 is a detail sectional view on'lineO-S of Fig. 8;

Fig. 10 is a detail view of the switch-operating mechanism;

Figs. 11 and 12 are views similar to Fig. 10, showing differentpositions of this mechanism;

Fig. 13 is a front elevational view of the "03 indicating disk;

Fig. 14 is a similar view of the "on indicating disk;

Fig. 15 is a detail view oi the face of the clock showing the on and011" disks'in inoperative position; and

Fig. 16 is a viewsimilar to Fig. 15 showing the indicating disks whenthey have been set for a predetermined operation.

To illustrate a preferred embodiment of my invention, I have shown aclock mechanism comprising a case "I having a dial II and the usualminute and hour hands I! and I3. The clock is adapted to be operatedthrough reduction gearing designated generally by the numeral l4, whichin the present instance is designed to be powered by the motor ll, whichmay be either a spring or electric motor, preferably the latter.

As the foregoing mechanism may be of conven- A tional character, it isunnecessary to describe the sameindetail. It will sumce to say'that the,7 clock mechanismls 'supportedupon spaced plates A and? in a usualmanner, and that the motor through the reduction gearing l4 serves torotate the shaft I! (Fig. 4). upon which the minute notch or recess 3|.

hand I2 is mounted. Secured to this shaft is a pinion I! in mesh withagear |8, which gear is in turn secured to a relatively wide pinion 8.The teeth of the pinion l8 are in turn in mesh with those of a gear 28rigidly mounted upon a sleeve 2| surrounding the shaft I8, which sleevecarries the hour hand l3.

Surrounding the sleeve 2| is a sleeve 22, which sleeve passesthrough thedial ll of the clock face and carries rigidly on its outer end the onsetting disk 23. Also secured to the rear end of the sleeve 22 is apinion 24 through which, as will be hereinafter described, the disk 23may be set to a given position.

Secured to the sleeve 22 so as to rotate therewith is a control disk 25having a peripheral notch or recess 28 at one point therein, the purposeof which will be hereinafter described.

Surrounding the sleeve 22 is a further sleeve 21 which projects throughthe clock dial and carries upon its outer end the off setting disk 28,the sleeve 21 also carrying a setting pinion 28 and a control disk 38having a peripheral The disks 25 and 38 are substantially alike inconstruction, and may be spaced apart by a washer 32. The setting disks23 and 28, together with the sleeves upon which they are mounted, arefrictionally held in any position to which they may be turned by meansof a spring ,washer 33 between the clock dial and the disk 28, and asecond spring washer 34 between the face of the sleeve 21 and the disk23. In practice the friction exerted by the washer 33 is greater thanthat exerted by the washer 34, so that when the disk 23 is turned or setthe position of the disk 28 will not be disturbed.

As shown in- Fig. 13, the disk 28 may have a portion thereof colored tocontrast with the remainder, and with the color of the disk 23. Asshown, substantially one half of the disk is colored red, as at 35, andmay have spaced indicating marks 38 corresponding with those of aportion of a usual clock dial. That is, if one half of the disk 28 iscolored red, this portion will be marked oil into six hour spaces, eachhour space being subdivided if desired. This disk is also provided 'witha pointer 31 which will cooperate with the numerals on the clock dialtoindicate the time at which the switch or other member may be actuatedto off position. As shown in,

Fig. 14, the disk 23 may be of substantially semicircular form andprovided with a pointer 38 to cooperate with the indicia on the clockdial. to indicate the time of moving the switch to on position. As willbe seen from Fig. 15, for example, the pointers 31 and 38 may be set inregistration, at which time the colored portion 35 of the disk 28 willbe completely covered by the disk 23, and at this time the recesses ornotches 26 and 3| will be in registration. shown in Fig. 16, the disksmay be rotated to any desired position, for instance, to turn the switchon at two oclock and to turn it oil at five-thirty oclock. In thisposition of the members, a part of the colored portion of the disk 28will be exposed to view, and this colored portion will extend over thatportion of the dial oi the clock during which period the switch willoccupy the on position. That is, the operator, by bserving the face ofthe clock, will be immediately informed as to the period during whichthe switch will be on, by the extent of the colored portion of the dial28 which is exposed.

Referring to .Fig. 2, a setting shaft 48 is movement, this shaft havinga turn button 4| on the outer end thereof, and being spring pressedtoward its outer position, shown in Fig. 2, by a spring 42 bearingagainst the end of the shaft behind the plate B. Upon the shaft 48 are apair of pinions 43 and 44. In the outer position of the shaft the pinion43 is designed to engage a gear 45 which is at all times in mesh withthe pinion 28 of the off setting disk 28, so that in this position ofthe parts rotation of the button 4| will turn this disk to any desiredposition.

When the shaft 4| is pressed inwardly by pres 'sure upon the button 4|against the action of As further mounted in theplates A and B forlongitudinal the spring 42, the pinion 44 engages a gear 46, which gearis in mesh with the pinion 24 on the sleeve 22 of the on setting disk23, so that this disk may likewise be turned to any given position. Itwill be understood that the spacing of the pinions 43 and 44 is lessthan that oi'the gears 45 and 48, so that when the pinion 43 is engagedwith its gear 45, the pinion 44 will be disengaged from the gear 48, andvice versa, thus permitting the setting of one disk independently of theother. It may also be stated that as the notched disks 25 and 38 rotatewith the setting disks 23 and 28, the notches 28 and 3| will always heara position related to that of the pointers 31 and 38.

Slidably and rotatably mounted upon the sleeve 22 is a hub 58 to one endof which is secured a gear 5|, the teeth of which are in mesh with thepinion |9, so that this hub will in the present instance be rotated at aspeed corresponding to that of the hour hand of the clock, the gear 5|being of the same size as the gear 28. This hub and associated partsconstitute the controlling or actuating member of the timer which servesto cause the actuation of the switch or other member to on and offpositions. Secured at the end of this hub opposite the gear 5| is a disk52 through and from which projects a spring arm 53 secured to the hub,this arm having a bent end 54. It may be noted that the arm 53 clearsthe outer peripheral edges of the disks 25 and 38, so that the hub 58may rotate in the position of the parts shown in Fig. 4 withoutinterference from the disks. However, the bent end 54 turns inwardly toa suflicient extent so that when this end is in registration with therecesses 26 and 3|, it will pass therethrough, the width of the springarm 53 being slightly less than that of the notches in the disks. Itwill be also apparent, as the description proceeds, that it is necessaryto move the hub 58 to the left, as shown in Fig. 4, even when thenotches 26 and 3| are not in registration with the arm 53. This can bereadily accomplished as the resilience of the arm 53 is such that itwill spring upwardly so that the bent end 54 will ride over the outerperiphery of the disks when the hub 58 is thus moved.

An'actuating yoke 68 provided with a laterally extending portion 6| ispivotally carried by the plate B, as shown in Figs. 4, 5 and 7. The endof the member BI is substantially T-shaped in form, and projects througha slot 62 in the plate so as to be held in position by a swinging arm 63having a notch 64 to engage the reduced portion of the member 6| behindthe plate. This yoke member is provided with arms 65 and 88 which liebetween the gear 5| and disk 52, so that the yoke will be swung aboutits pivot in the plate B when the hub 58 is moved axially, and viceversa, the hub, however, being rotatable freely between the arms and 88.This yoke to rotate the shaft in .a counterclockwise direction, as willbe hereinafter explained. The upper sleeve 22.

upon the shaft 18.

member is spring pressed outwardly at its lower end, as shown in Figs. 4and 6, by means of the tension spring 81 secured to the member below thepivot, and secured at its upper endat 88 'to e the plate B so that thelower end of the yoke and 5 the hub 58 will-be urged toward the right ortoward the position in which it is .shown in Fig. 4.

This yoke 88 serves to control in a step-bystep movement the rotation ofa shaft 18 rotatably. and slidably mounted in the plates A and B, asshown more especially in Figs. '4, 5 and 6. Secured to this shaft isa-hub 1| upon which is mounted an arm 12 to which is secured one end ofa spring 13, the other end being secured to a post 14 on the plate B, sothat this spring tends tion. A spring 15, acting between a portion ofthe hub and the plate B, serves to normally urge the shaft 18 outwardlyor to the right, as shown in, Fig. 4. Also secured to the hub 1| are aplurality of stop arms 16, 11 and 18, in addition to a detent 18arranged on one end of the hub itself.

Secured to the plate A is a stop member 88 having a reduced end 8|, thelatter of which isadapted to be engaged by the edge 82 of the arm 18,while the larger portion 88 of the stop member is adapted to beengaged-by the detent 18 to hold the member 18 in predetermined posiendof the'yoke member 88 is provided with an arm 83, which is adapted toengage the arms 18 and 11, and-thus control rotation of the shaft 18 ina step-by-step movement, according to the position of the yoke 88, whichis in turn controlled by the axial position of the hub 58 on theThisposition of the hub will be in turn controlled by the cooperation ofthe arm 53 and the disks 25 and 38, as will be hereinafter explained. a40 While the particularswitch mechanism is not important in allaspectsof the invention, I have shown in Fig. 3- a switch comprising fixedcontacts 85 and'86 adapted to be engaged by movable spring contacts 81and 88, respectively, the spring members 81 and 88 being so tempered asto be normally urged toward each other or away from the contacts 85 and88 when not pressed outwardly by a non-circular member 88 mounted Itwill be understood that when the member 88 islturned so that itsparallel sides are toward the members 81 and 88, these members will bedisengaged from the fixed contacts 85 and 88, and the switch will beopen. When, however, the vertices of the member 88 engage the members 81and 88, as shown in Fig. 3, the members 81 and 88 will'be forced out-'wardly and the switch will be in on" position. As shown, a movementofthe shaft '18 through an angle of 45 moves the switch from fofl' to soon" position, and vice versa. Upon the shaft 18 is provided amanipulating button 84 by which the shaft may be rotated and also movedlongitudinally.

Any suitable means may be employed to secure the arm 53 to the hub 58.In the present instance, however, I provide the hub with a peripheralgroove or recess 88, and an axial recess 8|. The arm 53 is of T-shapedformation, having a head 82 disposed within therecess 88, while the bodyof the arm lies in the recess 81. The head is held in place by means ofa split spring ring 83 which maybe snapped into the recess over the headof the arm.

It is desirable in devices of this character to be able to set the timereither for automatic or manual control, the latter being employed when,

it is desired to control the current passing through the switch by meansother than the timing mechanism. This is provided in the presentinstance by longitudinal movement of the shaft 18. When this shaft ismoved inwardly, or to the left, as shown in Fig. 4, the surface 82 ofthe arm 18 engagesthe reduced portion 8|- of the stop, as shown in Fig.5. In this position the switch arms 81 and 88 are thrown outwardly,

as shown in Fig. 3, so as to close the contact points and permit thecurrent to flow so that the flow may be manually controlled by othermeans.

.This position of the shaft 18 shown in Fig. 5 is the extremecounterclockwise position of the shaft. When it is rotated throughapproximately 45 in a clockwise direction from the position shown inFig. 5, the shoulder 18 will catch upon the enlarged portion 88 of thestop, the shaft being moved to the right (F i g. 4) by the spring 15,and the shaft 18 will be held in this position, opening the switch andthus arranging the device for automatic control. It will be noted thatthe arm 16 is provided with a portion 18 offset axially of the shaft 18with reference to the member 11,

and also that the arm 18 is provided with a cam edge or surface 18 for apurpose which will now be described.

The position of the parts shown in Figs. 4 and 5, for example, may beconsidered a normal position thereof, which is the position in which thedevice stands when arranged for manual con-- with the gear 48 to rotatethe on setting disk 23 until the pointer 38 indicates the time at whichit is desired that the currentbe turned on. For example, in Fig. l ofthe drawings izhe' device isset for the current to be turned on at fouroclock and of! at six, while in Fig. 16 the setting is such that .thecurrent will be turned on at two oclock and oil at five-thirty. Ineither case the period about the clock dial during which the currentwill flow will be indicated precisely by the colored portion of the disk28 which is exposed, so that the operator is readily aware 'of any errorwhich might have been made in the setting, and this portion of the diskalso bears indicia which shows the lengthof time during which thecurrent will be on. This setting of the disks 23 and 28 willlikewis'erotate the disks 25 and 38, so that the notches or recesses28and 3| will be rotated to a position relating to the pointers 31 and38', which position in the present construction is a position directlyopposite these pointers respectively.

After the pointers have been set the 5. During'this rotation the arms 18and 11 pass pivotal support in the plate B. This moves the lower end ofthe yoke, and therefore the hub 58,

to the left from the position shown in Fig. 4. It

will be understood that the disks 25- and 38'have been moved so that thenotches 28 and 8| are no longer opposite the end 54 of the arm 53.

. knob 88 is rotated in a clockwise direction in Figs. 1 and This,however, will not prevent the movement of the hub 50 to the left, as thearm 53 is resilient and will merely spring upwardly, permitting the end54 to ride upwardly over the edges of the disks. When the hub 50 hasbeen moved sum- 54 of the arm 53 to clear the disk 25, it will snapdownwardly until its outer end engages the inner face of this disk, andthus prevent the hub 50 and lower end of the yoke 60 being moved to theright under the tension of spring 51. The operator then releases thebutton 84 and the spring II will turn the shaft in a counterclockwisedirection until the edge ll of the arm 11 strikes against the portion 53of the yoke. This is the position of the parts shown in Fig. 11, and themechanism is now set for its next operation, which will be to turn thecurrent on at the proper time, for in the position of the parts justdescribed the member 89 is in a position at an angle of 45 from thatshown in Fig. 3, and the contact members are not in engagement.

As has been explained, the hub 50 is rotated by the clock mechanism insynchronization with the hour hand of the clock, and carries with it thearm 53. When, therefore, the clock has run to the point where the end 54of'this arm registers with the notch 26, it will move through this notchunder force of the spring 61, thus permitting the hub 50 to move towardthe right, as shown in Fig. 4. This movement of the hub and lower end ofthe yoke toward theright will move the upper end of the yoke toward theleft, so that the arm 83 will be disengaged from the edge 11' of the arm11, and permit the shaft III to be rotated through an angle ofapproximately 45 until the edge of the portion 16" of the arm 15 isengaged by the arm 83, as shown in Fig. 12. The offsetting of theportion Hi permits this result, as, while the arm 83 is movedsuiilciently far to the left (Figs. 11 and 12) to disengage the arm 11,it will still be engaged by the offset portion 16' of the arm 16. Thismovement of the shaft 10 results in setting the cam member 89 in theposition shown in Fig. 3, and making the contact to turn the current on.

When the clock mechanism, which cont nues to run, has progressed to thepoint at which the end 54 of the arm 53 registers with the notch 3!, the

arm will pass through this notch, thus allowing the hub 50 to be movedanother step to the right, or to its extreme right-hand position, asshown in Fig. 4, by the spring 51. This will serve to move the arm 83another step to the left from the position shown in Fig. 12, until theportion 15* of the arm 15 is released from engagement with the part 83.This permits a further rotation in a counterclockwise direction of theshaft Ill under impulse of the spring 13, until the surface I! engagesthe enlarged portion 80 of the stop member, and serves to turn thecurrent off, which completes the cycle of operation.

If it is now desired to close the switch so that the device controlledby the switch may be operated manually, the button 54 is pushedinwardly, which releases the portion 19 from the enciently far to theleft, as it will be, for the end '53 under spring pressure, the disks 25and 30 may be set to any position, and the hub 50 moved away from thesedisks by reason of the fact that the arm 53 may spring upwardly topermit the end 54 to ride over these disks, so that the mechlargedportion 80 ofthe stop, and results in the engagement of the surface 82by the reduced part- II of the stop, which permits a further turn of theshaft 10 to close the switch, as shown in Fig.

3. It will be seen that, whereas usually two con- I have provided asingle controlling or actuating anism may be set for operationregardless of the position of the disks. Moreover, when the first or "ondisk 25 permits the end 54 of the arm to pass through the notch 25, theend of this arm will then engage the adjacent face of the second disk30, and prevent further movement of the hub 50 until the arm comes intoregistration with the notch 3|.

While I have shown and described a preferred embodiment of my invention,it will be understood that it is not to be limited to all of the detailsshown, but is capable of modification and variation within the spirit ofthe invention and within the scope of the appended claims.

What I claim is: i

1. In a timer, a pair of rotatable disks each having a peripheral slottherein, means for manually rotating said disks to set each in apredetermined position, a power operated rotatable element, an armcarried by said element projecting toward said disks, means on the endof said arm adapted to enter said slots when in registration therewithand said means being yieldable outwardly to ride over the edges of saiddisks in one direction when the said means is not in registration withsaid slots, means mounting said element for axial movement, means urgingsaid element axially toward said disks, and a controlling memberactuated by the axial movements of said element.

2. In a timer, a power operated rotatable element, said element alsobeing axially movable, means to effect successive axial movements ofsaid member comprising a pair of discs, said element having a partnormally abutting said disks but being freed therefrom by rotation ofsaid element, and a movable controlling member, the movement of which iscontrolled by the axial movements of said element.

3. In a timer, a power operated rotatable element, said element alsobeing axially movable, means to effect successive axial movements ofsaid member comprising a pair of disks, said element having a partnormally abutting said disks but being freed therefrom by rotation ofsaid element, and a controlling member the movement of which iscontrolled by the axial movements of said element, said part comprisinga spring pressed member projecting toward the disks and the latter eachhaving a slot therein to receive said member when registering therewith.

4. In a timer, 9. power operated rotatable element, said element alsobeing axially movable, means to effect successive axial movements ofsaid element comprising a pair of disks, said element having-a partnormally abutting said disks but being freed therefrom by rotation ofsaid element, and a movable controlling member the movement of whichiscontrolled by the axial movements of said element, said part comprising a spring pressed member projecting toward the disks, and the lattereach having a slot therein to receive said member when registeringthere- 5. In a timer, a power operated rotatable element, said elementalso being axially movable, means toeffect successive axial movementsof\said m mber comprising a pairof discs, said element aving a partnormally abutting said'disks but being freed therefrom by rotation ofsaid element and a movable controlling member, the movement of which iscontrolled by the axial movements of said element, said controllingmember comprising a rotatable shaft, and means connecting saidelement-to said shaft to effect a step by step movement of the latter..

6. In a timer, a power operated rotatable element, said element alsobeing axially movable, means to effect successive axial movements ofsaid member comprising a pair of disks, said element having a partnormally abutting said disks but being freed therefrom by rotation ofsaid element, a lever actuated-by the said element, a control membercomprising a rotatable shaft having a plurality of spaced arms and saidlever having a part normally lying in the path a step by step movement,comprising a shaft,

an actuating element rotatably and slidably mounted on said shaft, meansfor rotating said element, means operatively connecting said element tothe control member to control movement of the latter, and means foreffecting step by step movement. of said actuating element along saidshaft comprising settable means roof said arms but moved therefrom byaxial movement of said element.

7. In a timer, a power operated rotatable element, saidelement alsobeingaxially'movable, means to effect successive axial movements of saidmember comprising a pair of disks, said element having a spring pressedpart normally abutting said disks but before being freed therefrom byrotation of said element and a movable controlling member, the movementof which is controlled by axial movement of said element.

8. In a timer,'a power operated rotatable element, said element alsobeing axially movable.

means to effect successive axial movements of said member comprising apair of disks, said element having apart adapted to be engaged andreleased successively by said disks to permit axial movement of saidelement and a movable controlling member, the movement of which iscontrolled by axial movement of said element.

9. Means for operating a control member in a step by step movement,comprising a shaft.

an actuating element rotatabl'y and slidably mounted on the said shaft,means for' rotating said element, means operatively connecting saidtatable with respect to said shaftyand a part on said element adapted tobe engaged and released by said settable means.

10. Means for operating a control member in element to the controlmember to control movea stepby step movement, compris ing ashaft,

an actuating element rotatably andslidably mounted -on the said shaft,means for, rotating sa'd element, means operatlvely connecting said'element to the control member to control movement of the latter, andmeans for effecting step by step movement of said actuatingelement alongsaid shaft comprising settable means rotatable with respect to said.shaft, and 'a part on said element adapted to be engaged and re-.

. an actuating element rotatably and slidably mounted on the said shaft,means for rotating said element, means operatively connecting saidelement to the controlmember to control move ment of the latter, andmeans for effecting step by step movement of said actuating elementalong said shaft comprising settable means rotatable with respect tosaid shaft, anda part on said element adapted to be engaged and releasedby said settablemeans, said settable means comprising a disc-having aperipheral opening therein, said part comprising aspring arm the bodyportion of which lies beyond the edge of portion to engage the diskexcept when aegistering with said'opening.

13. A timing mechanism having a power control element movable to twoseparate positions,

a pair of superposed indicating members, said 1 members being normallystationary during the operation of the. timing mechanism but rotatablymovableindependently to setting posi-- tion's, means cooperatinggwith'said members for moving said control plenient at times predetermined bythe setting of said members, one of said members having an indicatingmeans thereon to designate ,the time of movement of .said

element to power-on position, the other of said members having Iindicating means thereon to designate the time of movement of said ele--element to power-oi position, the inner of said members being in theform of a d-isk, and the outer of saidymembershaving a portion thereofcut away to expose a sector-shaped portion of said disk, the indicatingmeans onthe outer member being atone lateral edge of tl'i'e.cut--v awayportion thereof whereby. the area of the inner member exposed betweensaid two indieating means indicates the time elapsing between saidmovements.

14. A timing mechanism having a power control element movable to twoseparate positions, a pair of superposed indicating. members, saidmembers being normally stationary during the.

operation of the-timing mechanism but rotat-- ably movable independentlyto setting positions, means cooperating withsaid members for moving saidcontrol element at times predetermined I by the setting of said members,one'of said memleasedby said. settable means, said control membershaving an indicatingmeans thereon to designate the time of movement ofsaid element to power-on position, the other of said members havingindicating means thereon to designate the time of -movement of saidelement to poweroff position, the inner of'said membersbeing in the-formof a disk, and the oirter of said members having a portion thereof cutaway to expose a sector-shaped portion of said disk, the

end i one lateral edge of the cut-away portion thereof whereby the areaoi the inner member exposed between said two indicating means indicatesthe time elapsing between said movement, a portion of said inner memberadjacent the indicating means being colored to contrast with theremainder, and a part 01' said colored portion being exposed between theindicating means on the respective members when they are rotatablydisplaced.

15. A timing mechanism having a power control element movable to twoseparate positions, a pair of superposed indicating members, saidmemberslbeing normally stationary during the operation 01 the timingmechanism but rotatably movable independently to setting positions,means cooperating with said members for moving said control element attimes predetermined by the setting of said members, one 01 said membershaving an indicating means thereon to designate the time 01 movement ofsaid element to power-on position, the other of said members havingindicating means thereon to designate the time of movement of saidelement to power-oft position, the inner of said members being in theform of a disk, and the outer of said members being of the form of asector to expose a sector-shaped portion of said disk, the indicat. ingmeans on the outer member being at one lateral edge thereof whereby thearea of the inner g 2,300,950 indicating means on the outer member beingat ably movable independently to setting positions, means cooperatingwith said members for moving said control element at times predeterminedby the setting 01' said members, one of said members having anindicating means thereon to designate the time of movement of saidelement to power-on position, the other 0! said members havingindicating means thereon .to designate the time of movement of saidelement to powerofi. position, the inner of said members being in theform of a disk, and the outer of said members being of the form oi! asector to expose a sector-shaped portion of said disk, the indicatingmeans on the outer member being at one lateral edge thereof whereby thearea of the inner member exposed between said two indi- I cating meansindicates the time elapsing bemember exposed between said two indicatingmeans indicates the time elapsing between said movements.

16. A timing mechanism having a power control element movable to twoseparate positions, a pair of superposed indicating members, saidmembers being normally stationary during the operation of the timingmechanism but rotattween said movements, and a portion of the area ofsaid inner member adjacent the indicating means thereon being colored tocontrast with the remainder whereby the portion exposed between said twoindicating means will be readily discernible.

17. A timing mechanism according to claim 13, wherein the mechanism isprovided with a clock face having a dial with time indications thereon,and the indicating means provided on said members cooperate with saidtime indications on said dial to indicate the times of said movements.

18. A timing mechanism according to claim 14, wherein said mechanism isprovided with a clock face having a dial with time indications thereon,and said exposed colored portion oi the inner member cooperates with thetime indications on said dial to indicate thereon the time elapsingbetween said movements.

FREDERICK LUX.

